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Re: voltage stabilizer

To: jer@thlogic.com
Subject: Re: voltage stabilizer
From: ALAN_COSTICH@HP-USA-om11.om.hp.com
Date: Tue, 27 Feb 96 11:36:02 -0500
          I asked a co-worker for a brief line drawing with values for
          a stabiliser. He said why not just go to an auto parts store
          and buy one? Almost all cars use one for the panel lamps.
          =

          Duh!
          =

          So. I'm off at lunch to the nearest parts store to try my =

          luck.
          =

          Alan


______________________________ Reply Separator _________________________=
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Subject: Re: voltage stabilizer
Author:  Non-HP-jer (jer@thlogic.com) at HP-USA,mimegw2
Date:    2/24/96 9:04 AM


> =

>           13.48 volts into the vs. Can't read the output 'cause it is =
=

>           far from stable. Seems to be 5 to 13.48 in very swift swings=
 =

>           but nothing long enough to garner a reading from the meter. =
=

>           =

          =

        Yep, sounds like it's frazzled to me.  It should be putting out =
a
constant voltage (surprised? ;-) =

        It's a couple of strips of different metals in contact. When the=
y
heat up too much they seperate, breaking the connection.  Then they cool=
 =

down and re-establish the connection.  Quite a simple little device to =

control the voltage.  They go bad because they spark every time they =

connect, which scores them and builds up carbon deposits.  After a while=
, =

they just can't make a good connection.  You could theoretically break i=
t =

open, clean it up, adjust it a little, and it would work fine again. But=
 =

it's not really worth the trouble.  You could also replace it with a bet=
ter, =

diode based voltage regulator, but that's really not worth the trouble.
          =

                                        Jeremy DuBois
                                        Programmer/System Administrator
                                        Thermalogic Corporation
                                        '74 MGB, '76 Spit
          =



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